US7058186B2 - Loudspeaker device - Google Patents

Loudspeaker device Download PDF

Info

Publication number
US7058186B2
US7058186B2 US10/148,011 US14801102A US7058186B2 US 7058186 B2 US7058186 B2 US 7058186B2 US 14801102 A US14801102 A US 14801102A US 7058186 B2 US7058186 B2 US 7058186B2
Authority
US
United States
Prior art keywords
cabinet
microphone
loudspeaker
loudspeaker device
closed space
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US10/148,011
Other versions
US20030108213A1 (en
Inventor
Hidekazu Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. reassignment MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TANAKA, HIDEKAZU
Publication of US20030108213A1 publication Critical patent/US20030108213A1/en
Application granted granted Critical
Publication of US7058186B2 publication Critical patent/US7058186B2/en
Adjusted expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits

Definitions

  • the acoustic output signal detected by microphone 3 depends on height H, width W, and depth D of the inside of cabinet 2 , and has a sound-pressure frequency characteristic having sharp peaks and dips due to a standing-wave generated inside.
  • the feedback is utilized based on the acoustic output signal obtained by eliminating the standing-wave with a filter.

Abstract

An anti-oscillation loudspeaker device where a reproduced sound is compensated based on a acoustic signal detected by a microphone and a reproduced band is enlarged is provided. In this loudspeaker device, a microphone is placed near a position where sound pressure of resonance occurring in a closed space for at least one of height, width, and depth of the inside of a cabinet is minimum. An influence of the resonance is restrained, a feedback circuit becomes stable, and a feedback amount increases.

Description

This application is a U.S. National Phase Application of PCT International Application PCT/JP00/008411.
TECHNICAL FIELD
The present invention relates to a loudspeaker device used for various video/audio apparatuses, and more particularly to a loudspeaker device that detects a reproduced sound supplied from a loudspeaker unit and compensates the reproduced sound.
PRIOR ART
The prior art is described with reference to FIG. 5A, FIG. 5B, and FIG. 6.
FIG. 5A is a side sectional view of a conventional loudspeaker device, FIG. 5B is an upside sectional view of it, and FIG. 6 shows a frequency characteristic of a microphone incorporated into the loudspeaker device.
Loudspeaker unit 1 is mounted to an opening of cabinet 2, and an acoustic output signal is emitted. In cabinet 2, microphone 3 for detecting the acoustic output signal generated from the rear part of loudspeaker unit 1 is disposed in an easy-to-install place close to loudspeaker unit 1. Using the detected acoustic output signal, a low frequency band is compensated with feedback and is enlarged.
The acoustic output signal detected by microphone 3 depends on height H, width W, and depth D of the inside of cabinet 2, and has a sound-pressure frequency characteristic having sharp peaks and dips due to a standing-wave generated inside. For enlarging the low frequency band of a sound from loudspeaker unit 1, the feedback is utilized based on the acoustic output signal obtained by eliminating the standing-wave with a filter.
As shown in FIG. 6, in the conventional loudspeaker device, microphone 3 detects an additional acoustic output as resonance occurring in a closed space in cabinet 2, and therefore it is difficult to prevent the device from oscillating. Even if resonance components are tried to remove using the filter, all of them cannot be removed when the resonance is large, and the oscillation cannot be restrained satisfactorily. As a result, enlargement of a reproduced low frequency band is limited in the conventional loudspeaker device.
DISCLOSURE OF THE INVENTION
A loudspeaker device comprises: an amplifier for receiving an input signal; a loudspeaker unit for reproducing an output signal supplied from this amplifier; a cabinet incorporated with this loudspeaker unit; a microphone for detecting an acoustic output supplied from the loudspeaker unit; and a feedback circuit for feeding back an acoustic output signal detected by the microphone to the input of the amplifier. The loudspeaker unit is mounted to an opening in the cabinet to close the cabinet, and the microphone is placed near the position where sound pressure of resonance occurring in a closed space for at least one of height, width, and depth of the inside of the cabinet is minimum. Therefore, an influence of the resonance can be restrained, stability of the feedback circuit is improved, and a feedback amount can increase. The device can thus enlarge the reproduced low frequency band and have a stability thanks to ensure an oscillation margin.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1A is a side sectional view of a loudspeaker device in accordance with exemplary embodiment 1 of the present invention.
FIG. 1B is an upside sectional view of the loudspeaker device in accordance with exemplary embodiment 1 of the present invention.
FIG. 2 is a circuit block diagram of the loudspeaker device in accordance with exemplary embodiment 1 of the present invention.
FIG. 3 shows an acoustic output characteristic detected by a microphone in the loudspeaker device in accordance with exemplary embodiment 1 of the present invention.
FIG. 4A is a side sectional view of a loudspeaker device in accordance with exemplary embodiment 2 of the present invention.
FIG. 4B is an upside sectional view of the loudspeaker device in accordance with exemplary embodiment 2 of the present invention.
FIG. 5A is a side sectional view of a conventional loudspeaker device.
FIG. 5B is an upside sectional view of the conventional loudspeaker device
FIG. 6 shows an acoustic output characteristic detected by a microphone in the conventional loudspeaker device.
 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Loudspeaker devices in accordance with embodiments of the present invention will be described hereinafter with reference to FIG. 1A through FIG. 4B. In the description, the same elements used in the prior art are denoted with the same reference numbers.
Embodiment 1
FIG. 1A is a side sectional view of a loudspeaker device in accordance with embodiment 1 of the present invention, FIG. 1B is an upside sectional view of the loudspeaker device, FIG. 2 is a circuit block diagram of the loudspeaker device, and FIG. 3 shows an acoustic output characteristic of a microphone installed into the loudspeaker device. Loudspeaker unit 1 is mounted to an opening in cabinet 2 having a closed shape and substantially rectangular-parallelepiped shape. Microphone 3 is placed in cabinet 2 through a bracket (not drawn).
As shown in FIG. 2, the loudspeaker device comprises: input terminal 5; differential amplifier 6; power amplifier 7 receiving an output of differential amplifier 6; microphone amplifier 10 receiving an output of microphone 3 for capturing a sound wave supplied from loudspeaker unit 1; filter 9 for eliminating a standing-wave; and adder for adding the output of differential amplifier 6 to an output of filter 9 and for output it to differential amplifier 6. These circuits and loudspeaker unit 1 form a feedback circuit.
A position of microphone 3 will be described in more detail.
Cabinet 2 has resonance frequencies (fW, fD, fH) calculated using the following equations with reference to a closed space having width W, depth D, and height H of cabinet 2.
f W=(n+1)C/2W
f D=(n+1)C/2D
f H=(n+1)C/2H
where n is an integer not less than 1, and C is a sound velocity.
Microphone 3 is attached near positions where sound pressures of respective resonance frequencies are minimum in the closed space.
A relation between an output and an input in the block diagram in FIG. 2 is represented by
V out /V in =A/(1+A·T(S)),
where Vout is an output voltage, Vin is an input voltage, A is a total gain of the feedback loop, and T(S) is a transfer function.
When microphone 3 has an almost flat frequency characteristic, transfer function T(S) is substantially that of loudspeaker unit 1. Depending on a phase of the resonance in the closed space formed by loudspeaker unit 1 and cabinet 2, value of transfer function T(S) may be −1. When the value is −1, the device oscillates. Because microphone 3 does not detect the resonance occurring in the closed space in cabinet 2 in the embodiment of the present invention, the value of transfer function T(S) is extremely hardly −1. Therefore, the feedback loop is stable, and simultaneously a reproduced low frequency band is enlarged.
FIG. 3 shows an acoustic output characteristic detected by microphone 3. Microphone 3 detects only an acoustic output resonance component on the rear surface of loudspeaker unit 1.
Positions where the sound pressures of the respective resonance frequencies for the width, the depth, and the height are minimum do not necessarily match with each other in cabinet 2 having a rectangular-parallelepiped shape. In the present embodiment, microphone 3 is placed near the minimum-sound-pressure positions where transfer function T(S) is not −1. Also when microphone 3 is placed near the positions where the sound pressures of the resonance frequencies for one or two of the width, the depth, and the height are minimum, a loudspeaker device where a position of microphone 3 is extremely easily set is provided though the loudspeaker device has somewhat lower stability comparing with the arrangement discussed above.
In embodiment 1, the closed space has a rectangular-parallelepiped shape. However, even when the cabinet has a shape other than the shape, for example a sphere, a similar effect is obtainable. Even when the microphone is placed near positions where sound pressures of resonance frequencies in the entire closed space or a part of the closed space in the cabinet are minimum, a similar effect is obtainable.
Embodiment 2
FIG. 4A is a side sectional view of a loudspeaker device in accordance with embodiment 2 of the present invention, and FIG. 4B is an upside sectional view of the loudspeaker device.
Only a difference from embodiment 1 will be described. The difference is that microphone 3 is mounted to cabinet 2 with bracket 4.
If bracket 4 is designed appropriately, microphone 3 can be mounted to any position without constraints in cabinet 2. In addition, cabinet 2 is not required to have a complex structure for mounting microphone 3, and therefore, a resin-molding die of cabinet 2 is efficiently designed.
Bracket 4 is mounted in a method such as an integral molding during forming of cabinet 2, molding with the same material especially when strength is not lowered, screw fastening, adhesion, and fixing to a printed board constituting a feedback circuit.
In embodiments 1 and 2, a disposition and an operation of all elements like the loudspeaker unit, the microphone, the feedback circuit, and the amplifier are explained. Electronic circuits, which are elements except the loudspeaker unit or the microphone, can be disposed rather freely. The technique in the invention covers the loudspeaker devices where the cabinet houses just the loudspeaker unit and the microphone and where the cabinet houses them and a part of the electronic circuit.
INDUSTRIAL APPLICABILITY
The present invention relates to a loudspeaker device used for various video/audio apparatuses, and more particularly to a loudspeaker device that detects a reproduced sound from a loudspeaker unit and compensates the reproduced sound. A loudspeaker device that hardly oscillates and has an enlarged reproduced low frequency band is provided, while improving stability of a feedback circuit and increasing a feedback amount.
REFERENCE NUMERALS
  • 1 Speaker Unit
  • 2 Cabinet
  • 3 Microphone
  • 4 Bracket
  • 5 Input Terminal
  • 6 Differential Amplifier
  • 7 Power Amplifier
  • 8 Adder
  • 9 Filter
  • 10 Microphone Amplifier

Claims (12)

1. A loudspeaker device comprising:
an amplifier for amplifying an input signal;
a cabinet having an opening;
a loudspeaker unit mounted to the opening so as to close said cabinet for reproducing an output signal of said amplifier;
a microphone placed in said cabinet for detecting an acoustic output of said loudspeaker unit; and
a feedback circuit for feeding back an acoustic output signal of said microphone to an input of said amplifier,
wherein said microphone is placed substantially at a position where sound pressure of resonance occurring in a closed space in said cabinet is a minimum for said closed space.
2. The loudspeaker device according to claim 1 further comprising a bracket for placing and mounting said microphone in said cabinet.
3. A loudspeaker device comprising:
an amplifier for amplifying an input signal;
a cabinet having an opening;
a loudspeaker unit mounted to the opening so as to close said cabinet for reproducing an output signal of said amplifier;
a microphone placed in said cabinet for detecting an acoustic output of said loudspeaker unit; and
a feedback circuit for feeding back an acoustic output signal of said microphone to an input of said amplifier,
wherein said microphone is placed substantially at a position where sound pressure of resonance occurring in a closed space for one of height, width, and depth of an inside of said cabinet is a minimum for said closed space.
4. The loudspeaker device according to claim 3 further comprising a bracket for placing and mounting said microphone in said cabinet.
5. A loudspeaker device comprising:
an amplifier for amplifying an input signal;
a cabinet having an opening;
a loudspeaker unit mounted to the opening so as to close said cabinet for reproducing an output signal of said amplifier;
a microphone placed in said cabinet for detecting an acoustic output of said loudspeaker unit; and
a feedback circuit for feeding back an acoustic output signal of said microphone to an input of said amplifier,
wherein said microphone is placed substantially at a common position where respective resonance occurring in a closed space for at least two of height, width, and depth of an inside of said cabinet is a minimum for said closed space.
6. The loudspeaker device according to claim 5 further comprising a bracket for placing and mounting said microphone in said cabinet.
7. A loudspeaker device comprising:
a cabinet having an opening;
a loudspeaker unit mounted to the opening so as to close said cabinet; and
a microphone placed in said cabinet for detecting an acoustic output of said loudspeaker unit,
wherein said microphone is placed substantially at a position where sound pressure of resonance occurring in a closed space in said cabinet is a minimum for said closed space.
8. The loudspeaker device according to claim 7 further comprising a bracket used for placing and mounting said microphone in said cabinet.
9. A loudspeaker device comprising:
a cabinet having an opening;
a loudspeaker unit mounted to the opening so as to close said cabinet and being mounted to the opening so as to close said cabinet; and
a microphone placed in said cabinet for detecting an acoustic output of said loudspeaker unit,
wherein said microphone is placed substantially at a position where sound pressure of resonance occurring in a closed space for one of height, width, and depth of an inside of said cabinet is a minimum for said closed space.
10. The loudspeaker device according to claim 9 further comprising a bracket for placing and mounting said microphone in said cabinet.
11. A loudspeaker device comprising:
a cabinet having an opening;
a loudspeaker unit mounted to the opening so as to close said cabinet and being mounted to the opening so as to close said cabinet; and
a microphone placed in said cabinet for detecting an acoustic output of said loudspeaker unit,
wherein said microphone is placed substantially at a position where sound pressure of resonance occurring in a closed space for at least two of height, width, and depth of an inside of said cabinet is a minimum for said closed space.
12. The loudspeaker device according to claim 11 further comprising a bracket for placing and mounting said microphone in said cabinet.
US10/148,011 1999-12-01 2000-11-29 Loudspeaker device Expired - Fee Related US7058186B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP11-341750 1999-12-01
JP34175099A JP2001157293A (en) 1999-12-01 1999-12-01 Speaker system
PCT/JP2000/008411 WO2001041500A2 (en) 1999-12-01 2000-11-29 Loudspeaker device

Publications (2)

Publication Number Publication Date
US20030108213A1 US20030108213A1 (en) 2003-06-12
US7058186B2 true US7058186B2 (en) 2006-06-06

Family

ID=18348482

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/148,011 Expired - Fee Related US7058186B2 (en) 1999-12-01 2000-11-29 Loudspeaker device

Country Status (9)

Country Link
US (1) US7058186B2 (en)
EP (1) EP1234479B1 (en)
JP (1) JP2001157293A (en)
CN (1) CN100539738C (en)
CZ (1) CZ295486B6 (en)
DE (1) DE60009336T2 (en)
ES (1) ES2216993T3 (en)
MY (1) MY124203A (en)
WO (1) WO2001041500A2 (en)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9106192B2 (en) 2012-06-28 2015-08-11 Sonos, Inc. System and method for device playback calibration
US9219460B2 (en) 2014-03-17 2015-12-22 Sonos, Inc. Audio settings based on environment
US9264839B2 (en) 2014-03-17 2016-02-16 Sonos, Inc. Playback device configuration based on proximity detection
US9525931B2 (en) 2012-08-31 2016-12-20 Sonos, Inc. Playback based on received sound waves
US9538305B2 (en) 2015-07-28 2017-01-03 Sonos, Inc. Calibration error conditions
US9668049B2 (en) 2012-06-28 2017-05-30 Sonos, Inc. Playback device calibration user interfaces
US9690271B2 (en) 2012-06-28 2017-06-27 Sonos, Inc. Speaker calibration
US9690539B2 (en) 2012-06-28 2017-06-27 Sonos, Inc. Speaker calibration user interface
US9693165B2 (en) 2015-09-17 2017-06-27 Sonos, Inc. Validation of audio calibration using multi-dimensional motion check
US9706323B2 (en) 2014-09-09 2017-07-11 Sonos, Inc. Playback device calibration
US9715367B2 (en) 2014-09-09 2017-07-25 Sonos, Inc. Audio processing algorithms
US9743207B1 (en) 2016-01-18 2017-08-22 Sonos, Inc. Calibration using multiple recording devices
US9749763B2 (en) 2014-09-09 2017-08-29 Sonos, Inc. Playback device calibration
US9763018B1 (en) 2016-04-12 2017-09-12 Sonos, Inc. Calibration of audio playback devices
US9794710B1 (en) 2016-07-15 2017-10-17 Sonos, Inc. Spatial audio correction
US9860670B1 (en) 2016-07-15 2018-01-02 Sonos, Inc. Spectral correction using spatial calibration
US9860662B2 (en) 2016-04-01 2018-01-02 Sonos, Inc. Updating playback device configuration information based on calibration data
US9864574B2 (en) 2016-04-01 2018-01-09 Sonos, Inc. Playback device calibration based on representation spectral characteristics
US9891881B2 (en) 2014-09-09 2018-02-13 Sonos, Inc. Audio processing algorithm database
US9930470B2 (en) 2011-12-29 2018-03-27 Sonos, Inc. Sound field calibration using listener localization
US9973851B2 (en) 2014-12-01 2018-05-15 Sonos, Inc. Multi-channel playback of audio content
US10003899B2 (en) 2016-01-25 2018-06-19 Sonos, Inc. Calibration with particular locations
US10127006B2 (en) 2014-09-09 2018-11-13 Sonos, Inc. Facilitating calibration of an audio playback device
US10284983B2 (en) 2015-04-24 2019-05-07 Sonos, Inc. Playback device calibration user interfaces
US10299061B1 (en) 2018-08-28 2019-05-21 Sonos, Inc. Playback device calibration
US10372406B2 (en) 2016-07-22 2019-08-06 Sonos, Inc. Calibration interface
US10459684B2 (en) 2016-08-05 2019-10-29 Sonos, Inc. Calibration of a playback device based on an estimated frequency response
US10585639B2 (en) 2015-09-17 2020-03-10 Sonos, Inc. Facilitating calibration of an audio playback device
US10664224B2 (en) 2015-04-24 2020-05-26 Sonos, Inc. Speaker calibration user interface
US10734965B1 (en) 2019-08-12 2020-08-04 Sonos, Inc. Audio calibration of a portable playback device
US11106423B2 (en) 2016-01-25 2021-08-31 Sonos, Inc. Evaluating calibration of a playback device
US11206484B2 (en) 2018-08-28 2021-12-21 Sonos, Inc. Passive speaker authentication

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2850183B1 (en) * 2003-01-20 2005-06-24 Remy Henri Denis Bruno METHOD AND DEVICE FOR CONTROLLING A RESTITUTION ASSEMBLY FROM A MULTICHANNEL SIGNAL
CN101296533B (en) * 2007-12-29 2013-01-16 瑞声声学科技(常州)有限公司 Loudspeaker diaphragm equivalent mass and equivalent force measuring method
US8401207B2 (en) 2009-03-31 2013-03-19 Harman International Industries, Incorporated Motional feedback system
CN106954153B (en) * 2015-08-13 2020-04-14 深圳市韶音科技有限公司 Bone conduction loudspeaker

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4592088A (en) * 1982-10-14 1986-05-27 Matsushita Electric Industrial Co., Ltd. Speaker apparatus
EP0658064A2 (en) 1993-12-09 1995-06-14 Matsushita Electric Industrial Co., Ltd. Acoustic reproducing apparatus
US5588065A (en) * 1991-12-20 1996-12-24 Masushita Electric Industrial Co. Bass reproduction speaker apparatus
JPH1032895A (en) 1996-07-16 1998-02-03 Matsushita Electric Ind Co Ltd Acoustic reproducing device
US6088459A (en) 1997-10-30 2000-07-11 Hobelsberger; Maximilian Hans Loudspeaker system with simulated baffle for improved base reproduction
US6353670B1 (en) * 1996-07-02 2002-03-05 Donald R. Gasner Actively control sound transducer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4592088A (en) * 1982-10-14 1986-05-27 Matsushita Electric Industrial Co., Ltd. Speaker apparatus
US5588065A (en) * 1991-12-20 1996-12-24 Masushita Electric Industrial Co. Bass reproduction speaker apparatus
EP0658064A2 (en) 1993-12-09 1995-06-14 Matsushita Electric Industrial Co., Ltd. Acoustic reproducing apparatus
US6353670B1 (en) * 1996-07-02 2002-03-05 Donald R. Gasner Actively control sound transducer
JPH1032895A (en) 1996-07-16 1998-02-03 Matsushita Electric Ind Co Ltd Acoustic reproducing device
US6088459A (en) 1997-10-30 2000-07-11 Hobelsberger; Maximilian Hans Loudspeaker system with simulated baffle for improved base reproduction

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
International Preliminary Examination Report corresponding to PCT/JP00/08411 dated Jan. 21, 2002.
International Search Report corresponding to application No. PCT/JP00/08411 dated May 10, 2001.
Merriam-Webster's Collegiate Dictionary, 1997, Merriam-Webster, Incorporated, Tenth Edition, p. 137. *

Cited By (148)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11825289B2 (en) 2011-12-29 2023-11-21 Sonos, Inc. Media playback based on sensor data
US11910181B2 (en) 2011-12-29 2024-02-20 Sonos, Inc Media playback based on sensor data
US9930470B2 (en) 2011-12-29 2018-03-27 Sonos, Inc. Sound field calibration using listener localization
US10945089B2 (en) 2011-12-29 2021-03-09 Sonos, Inc. Playback based on user settings
US10986460B2 (en) 2011-12-29 2021-04-20 Sonos, Inc. Grouping based on acoustic signals
US10455347B2 (en) 2011-12-29 2019-10-22 Sonos, Inc. Playback based on number of listeners
US11290838B2 (en) 2011-12-29 2022-03-29 Sonos, Inc. Playback based on user presence detection
US11528578B2 (en) 2011-12-29 2022-12-13 Sonos, Inc. Media playback based on sensor data
US11825290B2 (en) 2011-12-29 2023-11-21 Sonos, Inc. Media playback based on sensor data
US11122382B2 (en) 2011-12-29 2021-09-14 Sonos, Inc. Playback based on acoustic signals
US11153706B1 (en) 2011-12-29 2021-10-19 Sonos, Inc. Playback based on acoustic signals
US11197117B2 (en) 2011-12-29 2021-12-07 Sonos, Inc. Media playback based on sensor data
US11849299B2 (en) 2011-12-29 2023-12-19 Sonos, Inc. Media playback based on sensor data
US11889290B2 (en) 2011-12-29 2024-01-30 Sonos, Inc. Media playback based on sensor data
US10334386B2 (en) 2011-12-29 2019-06-25 Sonos, Inc. Playback based on wireless signal
US11800305B2 (en) 2012-06-28 2023-10-24 Sonos, Inc. Calibration interface
US10129674B2 (en) 2012-06-28 2018-11-13 Sonos, Inc. Concurrent multi-loudspeaker calibration
US9736584B2 (en) 2012-06-28 2017-08-15 Sonos, Inc. Hybrid test tone for space-averaged room audio calibration using a moving microphone
US11064306B2 (en) 2012-06-28 2021-07-13 Sonos, Inc. Calibration state variable
US10791405B2 (en) 2012-06-28 2020-09-29 Sonos, Inc. Calibration indicator
US9699555B2 (en) 2012-06-28 2017-07-04 Sonos, Inc. Calibration of multiple playback devices
US9690271B2 (en) 2012-06-28 2017-06-27 Sonos, Inc. Speaker calibration
US9668049B2 (en) 2012-06-28 2017-05-30 Sonos, Inc. Playback device calibration user interfaces
US10296282B2 (en) 2012-06-28 2019-05-21 Sonos, Inc. Speaker calibration user interface
US9749744B2 (en) 2012-06-28 2017-08-29 Sonos, Inc. Playback device calibration
US11516608B2 (en) 2012-06-28 2022-11-29 Sonos, Inc. Calibration state variable
US9648422B2 (en) 2012-06-28 2017-05-09 Sonos, Inc. Concurrent multi-loudspeaker calibration with a single measurement
US10284984B2 (en) 2012-06-28 2019-05-07 Sonos, Inc. Calibration state variable
US9690539B2 (en) 2012-06-28 2017-06-27 Sonos, Inc. Speaker calibration user interface
US9788113B2 (en) 2012-06-28 2017-10-10 Sonos, Inc. Calibration state variable
US9961463B2 (en) 2012-06-28 2018-05-01 Sonos, Inc. Calibration indicator
US9820045B2 (en) 2012-06-28 2017-11-14 Sonos, Inc. Playback calibration
US10412516B2 (en) 2012-06-28 2019-09-10 Sonos, Inc. Calibration of playback devices
US11516606B2 (en) 2012-06-28 2022-11-29 Sonos, Inc. Calibration interface
US11368803B2 (en) 2012-06-28 2022-06-21 Sonos, Inc. Calibration of playback device(s)
US9106192B2 (en) 2012-06-28 2015-08-11 Sonos, Inc. System and method for device playback calibration
US10045138B2 (en) 2012-06-28 2018-08-07 Sonos, Inc. Hybrid test tone for space-averaged room audio calibration using a moving microphone
US10045139B2 (en) 2012-06-28 2018-08-07 Sonos, Inc. Calibration state variable
US9913057B2 (en) 2012-06-28 2018-03-06 Sonos, Inc. Concurrent multi-loudspeaker calibration with a single measurement
US10674293B2 (en) 2012-06-28 2020-06-02 Sonos, Inc. Concurrent multi-driver calibration
US9736572B2 (en) 2012-08-31 2017-08-15 Sonos, Inc. Playback based on received sound waves
US9525931B2 (en) 2012-08-31 2016-12-20 Sonos, Inc. Playback based on received sound waves
US9264839B2 (en) 2014-03-17 2016-02-16 Sonos, Inc. Playback device configuration based on proximity detection
US10412517B2 (en) 2014-03-17 2019-09-10 Sonos, Inc. Calibration of playback device to target curve
US10511924B2 (en) 2014-03-17 2019-12-17 Sonos, Inc. Playback device with multiple sensors
US9439021B2 (en) 2014-03-17 2016-09-06 Sonos, Inc. Proximity detection using audio pulse
US9439022B2 (en) 2014-03-17 2016-09-06 Sonos, Inc. Playback device speaker configuration based on proximity detection
US11540073B2 (en) 2014-03-17 2022-12-27 Sonos, Inc. Playback device self-calibration
US9516419B2 (en) 2014-03-17 2016-12-06 Sonos, Inc. Playback device setting according to threshold(s)
US10051399B2 (en) 2014-03-17 2018-08-14 Sonos, Inc. Playback device configuration according to distortion threshold
US9872119B2 (en) 2014-03-17 2018-01-16 Sonos, Inc. Audio settings of multiple speakers in a playback device
US10299055B2 (en) 2014-03-17 2019-05-21 Sonos, Inc. Restoration of playback device configuration
US9521487B2 (en) 2014-03-17 2016-12-13 Sonos, Inc. Calibration adjustment based on barrier
US9521488B2 (en) 2014-03-17 2016-12-13 Sonos, Inc. Playback device setting based on distortion
US10129675B2 (en) 2014-03-17 2018-11-13 Sonos, Inc. Audio settings of multiple speakers in a playback device
US10863295B2 (en) 2014-03-17 2020-12-08 Sonos, Inc. Indoor/outdoor playback device calibration
US9419575B2 (en) 2014-03-17 2016-08-16 Sonos, Inc. Audio settings based on environment
US9344829B2 (en) 2014-03-17 2016-05-17 Sonos, Inc. Indication of barrier detection
US11696081B2 (en) 2014-03-17 2023-07-04 Sonos, Inc. Audio settings based on environment
US10791407B2 (en) 2014-03-17 2020-09-29 Sonon, Inc. Playback device configuration
US9219460B2 (en) 2014-03-17 2015-12-22 Sonos, Inc. Audio settings based on environment
US9743208B2 (en) 2014-03-17 2017-08-22 Sonos, Inc. Playback device configuration based on proximity detection
US11625219B2 (en) 2014-09-09 2023-04-11 Sonos, Inc. Audio processing algorithms
US10599386B2 (en) 2014-09-09 2020-03-24 Sonos, Inc. Audio processing algorithms
US9749763B2 (en) 2014-09-09 2017-08-29 Sonos, Inc. Playback device calibration
US9781532B2 (en) 2014-09-09 2017-10-03 Sonos, Inc. Playback device calibration
US10154359B2 (en) 2014-09-09 2018-12-11 Sonos, Inc. Playback device calibration
US9715367B2 (en) 2014-09-09 2017-07-25 Sonos, Inc. Audio processing algorithms
US9706323B2 (en) 2014-09-09 2017-07-11 Sonos, Inc. Playback device calibration
US10701501B2 (en) 2014-09-09 2020-06-30 Sonos, Inc. Playback device calibration
US9936318B2 (en) 2014-09-09 2018-04-03 Sonos, Inc. Playback device calibration
US9952825B2 (en) 2014-09-09 2018-04-24 Sonos, Inc. Audio processing algorithms
US10127006B2 (en) 2014-09-09 2018-11-13 Sonos, Inc. Facilitating calibration of an audio playback device
US10127008B2 (en) 2014-09-09 2018-11-13 Sonos, Inc. Audio processing algorithm database
US9891881B2 (en) 2014-09-09 2018-02-13 Sonos, Inc. Audio processing algorithm database
US9910634B2 (en) 2014-09-09 2018-03-06 Sonos, Inc. Microphone calibration
US11029917B2 (en) 2014-09-09 2021-06-08 Sonos, Inc. Audio processing algorithms
US10271150B2 (en) 2014-09-09 2019-04-23 Sonos, Inc. Playback device calibration
US11818558B2 (en) 2014-12-01 2023-11-14 Sonos, Inc. Audio generation in a media playback system
US10349175B2 (en) 2014-12-01 2019-07-09 Sonos, Inc. Modified directional effect
US11470420B2 (en) 2014-12-01 2022-10-11 Sonos, Inc. Audio generation in a media playback system
US10863273B2 (en) 2014-12-01 2020-12-08 Sonos, Inc. Modified directional effect
US9973851B2 (en) 2014-12-01 2018-05-15 Sonos, Inc. Multi-channel playback of audio content
US10664224B2 (en) 2015-04-24 2020-05-26 Sonos, Inc. Speaker calibration user interface
US10284983B2 (en) 2015-04-24 2019-05-07 Sonos, Inc. Playback device calibration user interfaces
US10462592B2 (en) 2015-07-28 2019-10-29 Sonos, Inc. Calibration error conditions
US9538305B2 (en) 2015-07-28 2017-01-03 Sonos, Inc. Calibration error conditions
US10129679B2 (en) 2015-07-28 2018-11-13 Sonos, Inc. Calibration error conditions
US9781533B2 (en) 2015-07-28 2017-10-03 Sonos, Inc. Calibration error conditions
US10419864B2 (en) 2015-09-17 2019-09-17 Sonos, Inc. Validation of audio calibration using multi-dimensional motion check
US11099808B2 (en) 2015-09-17 2021-08-24 Sonos, Inc. Facilitating calibration of an audio playback device
US11197112B2 (en) 2015-09-17 2021-12-07 Sonos, Inc. Validation of audio calibration using multi-dimensional motion check
US11803350B2 (en) 2015-09-17 2023-10-31 Sonos, Inc. Facilitating calibration of an audio playback device
US9693165B2 (en) 2015-09-17 2017-06-27 Sonos, Inc. Validation of audio calibration using multi-dimensional motion check
US11706579B2 (en) 2015-09-17 2023-07-18 Sonos, Inc. Validation of audio calibration using multi-dimensional motion check
US10585639B2 (en) 2015-09-17 2020-03-10 Sonos, Inc. Facilitating calibration of an audio playback device
US9992597B2 (en) 2015-09-17 2018-06-05 Sonos, Inc. Validation of audio calibration using multi-dimensional motion check
US10841719B2 (en) 2016-01-18 2020-11-17 Sonos, Inc. Calibration using multiple recording devices
US11432089B2 (en) 2016-01-18 2022-08-30 Sonos, Inc. Calibration using multiple recording devices
US9743207B1 (en) 2016-01-18 2017-08-22 Sonos, Inc. Calibration using multiple recording devices
US11800306B2 (en) 2016-01-18 2023-10-24 Sonos, Inc. Calibration using multiple recording devices
US10063983B2 (en) 2016-01-18 2018-08-28 Sonos, Inc. Calibration using multiple recording devices
US10405117B2 (en) 2016-01-18 2019-09-03 Sonos, Inc. Calibration using multiple recording devices
US11516612B2 (en) 2016-01-25 2022-11-29 Sonos, Inc. Calibration based on audio content
US10003899B2 (en) 2016-01-25 2018-06-19 Sonos, Inc. Calibration with particular locations
US11006232B2 (en) 2016-01-25 2021-05-11 Sonos, Inc. Calibration based on audio content
US10735879B2 (en) 2016-01-25 2020-08-04 Sonos, Inc. Calibration based on grouping
US11106423B2 (en) 2016-01-25 2021-08-31 Sonos, Inc. Evaluating calibration of a playback device
US10390161B2 (en) 2016-01-25 2019-08-20 Sonos, Inc. Calibration based on audio content type
US11184726B2 (en) 2016-01-25 2021-11-23 Sonos, Inc. Calibration using listener locations
US10880664B2 (en) 2016-04-01 2020-12-29 Sonos, Inc. Updating playback device configuration information based on calibration data
US11379179B2 (en) 2016-04-01 2022-07-05 Sonos, Inc. Playback device calibration based on representative spectral characteristics
US9864574B2 (en) 2016-04-01 2018-01-09 Sonos, Inc. Playback device calibration based on representation spectral characteristics
US11212629B2 (en) 2016-04-01 2021-12-28 Sonos, Inc. Updating playback device configuration information based on calibration data
US10402154B2 (en) 2016-04-01 2019-09-03 Sonos, Inc. Playback device calibration based on representative spectral characteristics
US11736877B2 (en) 2016-04-01 2023-08-22 Sonos, Inc. Updating playback device configuration information based on calibration data
US10405116B2 (en) 2016-04-01 2019-09-03 Sonos, Inc. Updating playback device configuration information based on calibration data
US9860662B2 (en) 2016-04-01 2018-01-02 Sonos, Inc. Updating playback device configuration information based on calibration data
US10884698B2 (en) 2016-04-01 2021-01-05 Sonos, Inc. Playback device calibration based on representative spectral characteristics
US11218827B2 (en) 2016-04-12 2022-01-04 Sonos, Inc. Calibration of audio playback devices
US10045142B2 (en) 2016-04-12 2018-08-07 Sonos, Inc. Calibration of audio playback devices
US9763018B1 (en) 2016-04-12 2017-09-12 Sonos, Inc. Calibration of audio playback devices
US11889276B2 (en) 2016-04-12 2024-01-30 Sonos, Inc. Calibration of audio playback devices
US10299054B2 (en) 2016-04-12 2019-05-21 Sonos, Inc. Calibration of audio playback devices
US10750304B2 (en) 2016-04-12 2020-08-18 Sonos, Inc. Calibration of audio playback devices
US10448194B2 (en) 2016-07-15 2019-10-15 Sonos, Inc. Spectral correction using spatial calibration
US11337017B2 (en) 2016-07-15 2022-05-17 Sonos, Inc. Spatial audio correction
US9794710B1 (en) 2016-07-15 2017-10-17 Sonos, Inc. Spatial audio correction
US9860670B1 (en) 2016-07-15 2018-01-02 Sonos, Inc. Spectral correction using spatial calibration
US10750303B2 (en) 2016-07-15 2020-08-18 Sonos, Inc. Spatial audio correction
US10129678B2 (en) 2016-07-15 2018-11-13 Sonos, Inc. Spatial audio correction
US11736878B2 (en) 2016-07-15 2023-08-22 Sonos, Inc. Spatial audio correction
US11237792B2 (en) 2016-07-22 2022-02-01 Sonos, Inc. Calibration assistance
US10372406B2 (en) 2016-07-22 2019-08-06 Sonos, Inc. Calibration interface
US10853022B2 (en) 2016-07-22 2020-12-01 Sonos, Inc. Calibration interface
US11531514B2 (en) 2016-07-22 2022-12-20 Sonos, Inc. Calibration assistance
US10459684B2 (en) 2016-08-05 2019-10-29 Sonos, Inc. Calibration of a playback device based on an estimated frequency response
US11698770B2 (en) 2016-08-05 2023-07-11 Sonos, Inc. Calibration of a playback device based on an estimated frequency response
US10853027B2 (en) 2016-08-05 2020-12-01 Sonos, Inc. Calibration of a playback device based on an estimated frequency response
US11206484B2 (en) 2018-08-28 2021-12-21 Sonos, Inc. Passive speaker authentication
US10582326B1 (en) 2018-08-28 2020-03-03 Sonos, Inc. Playback device calibration
US11350233B2 (en) 2018-08-28 2022-05-31 Sonos, Inc. Playback device calibration
US10299061B1 (en) 2018-08-28 2019-05-21 Sonos, Inc. Playback device calibration
US11877139B2 (en) 2018-08-28 2024-01-16 Sonos, Inc. Playback device calibration
US10848892B2 (en) 2018-08-28 2020-11-24 Sonos, Inc. Playback device calibration
US11374547B2 (en) 2019-08-12 2022-06-28 Sonos, Inc. Audio calibration of a portable playback device
US10734965B1 (en) 2019-08-12 2020-08-04 Sonos, Inc. Audio calibration of a portable playback device
US11728780B2 (en) 2019-08-12 2023-08-15 Sonos, Inc. Audio calibration of a portable playback device

Also Published As

Publication number Publication date
EP1234479A2 (en) 2002-08-28
MY124203A (en) 2006-06-30
CZ20021889A3 (en) 2002-10-16
CZ295486B6 (en) 2005-08-17
EP1234479B1 (en) 2004-03-24
CN1390430A (en) 2003-01-08
WO2001041500A2 (en) 2001-06-07
CN100539738C (en) 2009-09-09
DE60009336T2 (en) 2004-08-19
JP2001157293A (en) 2001-06-08
ES2216993T3 (en) 2004-11-01
WO2001041500A3 (en) 2002-05-10
US20030108213A1 (en) 2003-06-12
DE60009336D1 (en) 2004-04-29

Similar Documents

Publication Publication Date Title
US7058186B2 (en) Loudspeaker device
US5953414A (en) Piezo-electric speaker capsule for telephone handset
US6834744B2 (en) Speaker system
EP1617703A2 (en) Speaker apparatus using display window
US9049505B2 (en) Electronic device with loudspeaker
US6122385A (en) Sound reproduction apparatus with stable feedback
US20040042625A1 (en) Equalization and load correction system and method for audio system
US6907955B2 (en) Electromagnetic electroacoustic transducer
US4727583A (en) Telephone transducer with improved frequency response
JP4135319B2 (en) Speaker device
US6928173B2 (en) Capacitor microphone
JP4224892B2 (en) Speaker device
US6975736B2 (en) Microphone
JP3147662B2 (en) Sound reproduction device
US7272236B2 (en) Speaker assembly for a television cabinet
WO2002013573A1 (en) Loudspeaker device
JPH07162990A (en) Acoustic reproducing deice
CN207835781U (en) A kind of loud speaker module
EP0773700A2 (en) Portable loudspeaker/directional microphone peripheral
JPH05183978A (en) Motional feedback speaker device
KR200244194Y1 (en) Housing structure in speaker built-in wire/wireless microphone amplifier
WO2019190559A1 (en) Microphone units with multiple openings
JPH11298357A (en) High frequency device
JPH11155187A (en) Loudspeaker system
JPH11121962A (en) Shield case structure and its manufacture

Legal Events

Date Code Title Description
AS Assignment

Owner name: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TANAKA, HIDEKAZU;REEL/FRAME:013254/0013

Effective date: 20020820

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 4

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20140606